I remember the goal was to replace gecko. A good webkit alternative is desparately needed on the web, a shame mozilla didn't see it through.
We invest a lot in Gecko though, precisely because it's important to have a world-class independent engine.
But I completely understand why you wouldn't want to "boil the ocean". That said, I hope you appreciate how much support FF has from users. Anyone of us left using are doing so by paying a price for it. Everything else mozilla does appears like distracting side-quests. I would not care much about donating for wikipedia but if Mozilla focused on their flagship product more I would be happy to contribute both financially and through bug reports and grunt work PR's.
We live on the ocean and browsers are our ship.